The Third Amendment (Amendment III) to the United States Constitution places restrictions on the quartering of soldiers in private homes without the owner's consent, forbidding the practice in peacetime... Meaning that the Unites States military cannot use your home during times of peace.
Slavery was different in the new world since they were not treated as people but as animals and in his home country he knew how slavery worked and how slaves were actually treated as people. He would be a slave at his own home gladly compared to this because he sees the horror around him and the way that the white people are intimidating and completely different from anything he had ever seen.
B. Constitution
...is the answer to your question :)
To make the production and sale of alcohol illegal